deals are only valid for a max stay of 21 days
Don't know what airline you work for (not mainline?)but that's a pretty lousy staff travel policy.
I don't even list round trips any more as the loads change so much. I list one way and then, whenever, check loads and list back, all via computer and it would be for a lot less than GBP340.
Damn, I hated BA staff check-in at T4 when I had to use them.